Burner



July 2l, 1925. 1,545,445

H. F. GRUENEWLD BURNER Filed July 3, 1924 ieee Ufiilf) STATES PATENT 'FFIQEy -IEREJJAN E. GRUT'N'-"WALD, OF ST. LOUSS, MSSOURI, ASS'GNOR' OF ONE-HALF T0 AL- ?l-IONSE if. HGEGEN AND ONE-HALF TO JOHN PETERS, BOTH OF ST, LOUIS, .MIS-

SGU B1,

BURNER'.

Application .filed July 3,

To ZZ 'amont t 122653/ Concern.'

lle it known thatA l, Hi* :imi: F. GnUnivnr wie, a' citizen of the United States, residit the city of et. Louis, in the State 'ssoura liewe invented certain new and 'ul Improvements in Burners, of which 1 e following is a specification.

i`his invention pertains to burners, and relates more particularly to certain improvements in oil burners of the type embodied in applicants prior application for United States patent, Seria-l Number' 637,237, filed May 7, 1923. The object of the prior invention was to spread the oil evenly and uniformly into a thin layer on a preheating siii-face to facilitate its vaporization and to make for efficient combustion.

rlChe principal object of the present invention is to provide means for deflecting the stream of air requisite for combustion' from a direct upward course past the periphery of the burner to a course across the top of the burner.

Another object is to provide means for preheating the said air to 'facilitate more perfect combustion of the oil.

Another object is the provision of means for positively confining the burner and defie ftor to their predetermined positions within the furnace.

ather objects and advantages will appear in the course of the following description.

in the accompanying drawings forming` part of this specification, in which like numbers of reference denotes like parts wherever they occur,

Figure 1 is a horizontal sectional view, on the line 1-1 of Figure 2, of a furnace embodving this invention;

VvFigure 2 is a fragmental vertical sectional view of the same;

lligure 3 is a sectional view on the line -J' of Figure 2; and

Figure 4 is a fragmentary elevation taken looking from the right of Figure 1.

Referring to the drawings, a furnace 1 has a horizontal grate 2, on which rests a pan 3, containing plate 4, preferably formed or molded of refractory material, such as fire clay. The plate 4 is disclosed in the aforesaid prior application and has a central horizontal surface 5, surrounded by a groove 6, which is in turn surrounded by a second horizontal surface 7, lower than the first surface 5, but higher than the bottom of 19241,. Serial No. 7232912.

groove 6. Surface 7 is bounded by a groove- 8, which in turn is surrounded by a surface 9, lower than the surface 7, but higher than the bottom of the groove 8.A The surface 9 is terminated outwardly by the verticalsides 10. The platey 4 is preferably leveled and cemented to the pan 4- by means of lire clay 11. Y

The stream of air requisite for the combustion of the oil on the burner plate 4 is deflected from a direct upward course past the periphery 10 of the plate 4 to a` course across the top ofpl'ate 4 by means ofk a deflector 12, preferably formed of fire clay, tile, or other suitable refractory material and superposed on plate 4'. The periphery 18 of the said deflector is preferably alinement with the periphery 10 of plate 4. A central dome-shaped cavity 14 is formed in the bottom of deflector 12,r leaving a circumscribing bottom face 15, which rests on surface 9 of plate 4,v being preferably cemented thereto. Bottom face 15 is interrupted at intervals by a plurality of radial grooves 16 therein. An annular boss 17 is formed on` the top 18 of deiiector block 12, and a central opening 19 therein extends through the block 12 to the cavity 14. Deflector 12 is preferably formed of a plurality of sectors 20, in the present instance four, which are separated by vertical planes passing through the central axes of the grooves 16, and preferably cemented together by fire clay or other suitable binding material 21. A horizontal plate 22 is apertured at 23 to receive'the boss 17 and rests on the top 18. The peripliery 24 of plate 22 nearly meets the Wall 25 of the furnace, and the opening between the periphery 24 and wall 25 is preferably sealed by fire clay 26 as well as the opening which may exist because of any looseness of fit between plate 22 and boss 17, fire clay 26 preferably being placed between the plate 22 and the top 18.

The oil may be supplied to plate 4 in any suitable manner, preferably as disclosed in the aforesaid prior application, by means of a tank 27 arranged at an elevated point outside the furnace 1 and connected by an elbow 28 and any suitable valve 29 to a pipe 30 having a horizontal portion 31, passing through an opening 32 in the Wall 25, and a vertical depending portion 33 terminating above the plane of the top of member 12, in which opening 1,9 through which the oil is discharged upon the center of plate 4, from which 1t spreads 1n a thin layer over the surfaces 5, 7, and 9, being evenly redis- Vany overflow of oil to a single point, and

opposite recess 34 an opening 35 in the peripheral wall 36 of the pan 3 discharges the overflow into the space beneath the grate 2.

I-Iaving thus described this invention, I hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as it is evident that many minor changes may be made therein without departing from the spirit of this invention or the scope of the following claims.

I claim:

l: An oil burner comprising a base presenting a stepped upper surface provided with concentric oil-receiving channels, a dome-shaped member superposed on the said upper surface of the said base and having a plurality of lateral air-ducts for directing air across said stepped surface of the said base, and a horizontal plate supported on the top of the said dome-shaped member and having a central aperture.

2. An oil burner comprising a base presenting a stepped upper surface provided with concentric oil-receiving channels, a centrally apertured dome-shaped member superposed on the said base and having a plurality of lateral aireducts for directing air across the stepped surface of the said base, said dome-shaped member having an annular boss on the top thereof, and a horizontal plate mounted on the top of the said dome-shaped member and apertured to reccive the said boss.

3. An oil burner comprising a base presenting a stepped upper surface provided with oil receiving channels, a dome-shaped member superposed on the said base and formed of a plurality of sectors each of which is provided at the top with a boss, said dome-shaped member having a plurality of air-inlets for directing air across the stepped surface of the said base, a horizontal plate mounted on top of the dome-shaped member and apertured to receive the boss of the said sectors, and means sealing the `ioints between the respective sectors and between the bosses of the latter and the said horizontal plate.

In testimony whereof I hereunto affix my signature.

HERMAN F. GRUENEWALD. 

